Programming Exercise $10-1$: $$LetterDemo

Instruction:

Create an application$$named$$LetterDemo$$that instantiates objects of two classes named$$Letter$$and$$CertifiedLetter$$and that demonstrates all their methods.

The classes are used by a company to keep track of letters they mail to clients.

The$$Letter$$class$$includes auto$-$implemented properties for the$$Name$$of the recipient and the$$Date$$mailed $($stored as strings$).$

Hints:

$$You may want to read the entire section $10-1$Introduction to Inheritance$$ in your textbook as a reference $$

$$You may want to read the section $10-2$Extending Classes$$in your textbook as a reference for how to create a derived class as well as the$$You Do It$$Creating the Loan Class$$activity $.$

$$You may want to read the section $10-6$a and b $$Using the Get Type$()$ Method$$and $$Using the ToString$()$ Method$$ in your textbook as a reference.

Refer to Figure $10-23$ for an example of an Employee class ToString$()$ method.

$$Review the Panopto video "Programming Exercise $10-1$ LetterDemo" by clicking on the following link: Programming Exercise $10-1$ LetterDemo

$$You may also want to review the Panopto video "Inheritance Example"$$ by clicking on the following link: Chapter $10$ Inheritance Example

$$You may also want to review the Panopto video "ToString Method Example"$$by clicking on the following link:$$Chapter $10$ ToString Method Example

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$--$ Your CertifiedLetter class is inherited from your base class Letter $$You may also use an auto$-$implemented property for Tracking Id$.$

$--$ Your class Letter will$$also include a ToString$()$ method that returns a string constructed from the return value of the object$$s GetType$()$ method

$$and the values of the fields.$$Used for your WriteLine to display your object characteristics $($example shown below$)$

$$Example $$Output:

Letter To: Electric Company Date mailed : $02/14/18$

CertifiedLetter To: Howe and Morris, LLC Date mailed : $04/01/2019$ Tracking number: i$2$YD$45$